package com.johnny.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Component
public class PaymentService {
    public String paymentInfo_ok(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + "  paymentInfo_ok,id:" + id + "\t" + "哈哈~";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name="execution.isolation.thread.timeoutInMilliseconds",value="3000")//超时时间限定
    }) //报异常后的处理
    public String paymentInfo_TimeOut(Integer id) {
        int timeNumber = 5;
        try {TimeUnit.SECONDS.sleep(timeNumber);} catch (InterruptedException ex) {ex.printStackTrace();}
        return "线程池：" + Thread.currentThread().getName() + "  paymentInfo_TimeOut,id:" + id + "\t" + "呜呜呜~ 耗时" + timeNumber + "秒钟";
//        int age = 10/0;
//        return "线程池：" + Thread.currentThread().getName() + "  paymentInfo_TimeOut,id:" + id + "\t" + "呜呜呜~ 耗时";

    }

    /*
    当前服务不可用力，做服务降级，兜底的方案 paymentInfo_TimeOutHandler处理
     */
    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池：" + Thread.currentThread().getName() + "  8001系统繁忙或运行报错，请稍候在操作,id:" + id + "\t" + "额额额～超时了";
    }

    //=======服务熔断

    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name="circuitBreaker.enabled",value="true"), //是否开启断路器
            @HystrixProperty(name="circuitBreaker.requestVolumeThreshold",value="10"),  //请求次数
            @HystrixProperty(name="circuitBreaker.sleepWindowInMilliseconds",value="10000"),//时间窗口期
            @HystrixProperty(name="circuitBreaker.errorThresholdPercentage",value="60") //失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if(id<0){
            throw new RuntimeException("*******id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"\t"+"调用成功，流水号"+serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id 不能负数,请稍后再试，/(ToT)/ ～ id："+id;
    }
}
